Premier Cup Dental Amalgam Corrosion-Resisting Steel Overall depth: 0.319 inches minimum and 0.422 inches maximum Bottom overall diameter: 1.266 inches minimum and 1.297 inches maximum Iii part name assigned by controlling agency: cup dental amalgam corrosion-resisting steel Top overall diameter: 1.469 inches minimum and 1.531 inches maximum Special features: corrosion steel; skid resisting base